ASTROSAT CZTI

Data Quality Report

Orbit 16795

Creation date: 2024-06-27T17:27:43.098046
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_004T04_9000002494_16795cztM0_level2.evt modeM0/AS1A05_004T04_9000002494_16795cztM0_level2_quad_clean.evt
Size (bytes)425,136,96069,056,640
Size405.4 MB 65.9 MB
Events in quadrant A2,784,386438,357
Events in quadrant B3,273,674425,450
Events in quadrant C2,967,383425,502
Events in quadrant D3,471,382412,148

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120592
B0133531
C0122431
D0141971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5564561.006470%
B55642614.690870%
C55641182.120776%
D55642033.648454%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 5795 5566 4 4 0.07% 0.07%
B 5795 5566 130 130 2.24% 2.34%
C 5795 5566 6 6 0.10% 0.11%
D 5795 5566 94 94 1.62% 1.69%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 157289 1126.92 679 664 139.0
A 10 234 10752 72.58 679 664 139.0
A 0 226 6023 38.56 679 664 139.0
B 0 229 536608 4142.87 662 645 129.4
B 15 35 67029 513.13 662 645 129.4
B 0 197 26224 197.72 662 645 129.4
C 0 207 182451 1177.97 649 652 154.3
C 3 233 117976 760.21 649 652 154.3
C 14 238 98975 637.09 649 652 154.3
D 1 52 444181 2777.79 650 631 159.7
D 12 110 189035 1179.91 650 631 159.7
D 7 38 158115 986.27 650 631 159.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter